阅读说明：本技术 一种衣服撑用铸铁工件的制备方法 (Preparation method of cast iron workpiece for clothes support ) 是由 徐小培 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种衣服撑用铸铁工件的制备方法,属于生铁铸件技术领域,包括如下步骤：(1)改性填料的制备；(2)生铁的预处理；(3)废钢预处理；(4)成品制备。本发明提供了一种衣服撑用铸铁工件的制备方法,通过本发明方法制备的铸铁工件,抗拉伸性能、抗冲击韧性、抗锈性能都得到显著的改善,将其用于衣服撑的制作中,可有效的提升衣服撑的使用品质,延长衣服撑的使用寿命。(The invention discloses a preparation method of a cast iron workpiece for a clothes support, belonging to the technical field of cast iron castings and comprising the following steps: (1) preparing modified filler; (2) pretreating pig iron; (3) pretreating scrap steel; (4) and (5) preparing a finished product. The cast iron workpiece prepared by the method has obviously improved tensile resistance, impact toughness and rust resistance, and can effectively improve the service quality of the clothes support and prolong the service life of the clothes support when being used for manufacturing the clothes support.)

1. A preparation method of a cast iron workpiece for a clothes hanger is characterized by comprising the following steps:

(1) preparing the modified filler:

a. putting the hollow glass beads into DBD cold plasma treatment equipment, carrying out cold plasma treatment, treating for 35 ~ 45min, and taking out for later use;

b. immersing the hollow glass beads subjected to cold plasma treatment in the operation a into a modifier, continuously stirring while immersing, stirring at the rotating speed of 120 ~ 140rpm for 30 ~ 40min, and filtering and drying;

(2) pre-treating pig iron:

a. putting pig iron into a microwave environment for microwave treatment for 5 ~ 9min, polishing the surface with abrasive paper, and removing debris for later use;

b. placing the pig iron treated in the operation a on a GJ-1.5 type high-frequency high-voltage high-power electron accelerator for electron beam irradiation treatment, and taking out for later use after the irradiation treatment is carried out for 24 ~ 28 min;

(3) pretreatment of scrap steel:

a. immersing the scrap steel into an oil stain cleaning agent, then placing the scrap steel into an ultrasonic environment for ultrasonic cleaning, taking out the scrap steel after cleaning for 1 ~ 2 hours, washing the scrap steel with sterile water, and drying the scrap steel for later use;

b. placing the steel scrap cleaned and dried in the operation a on a GJ-1.5 type high-frequency high-voltage high-power electron accelerator for electron beam irradiation treatment, and taking out for later use after the irradiation treatment is carried out for 16 ~ 18 min;

(4) and (3) preparing a finished product:

a. uniformly mixing the pig iron pretreated in the step (2) and the scrap steel pretreated in the step (3) according to the weight ratio of 10 ~ 14:1 ~ 2, putting the mixture into a stirring tank, adding the modified filler obtained in the step (1) at a constant speed while stirring, and taking out the mixture for later use after stirring for 1 ~ 2 h;

b. and c, adding the mixture obtained in the operation a into a smelting furnace for smelting, carrying out vacuum degassing treatment after the mixture is completely smelted, and then discharging from the furnace for casting and forming.

2. The method for preparing a cast iron workpiece for a clothes hanger as claimed in claim 1, wherein the power of cold plasma treatment in operation a of step (1) is 1800 ~ 2000W.

3. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the modifier in the operation b of the step (1) comprises 3 ~ 4% white carbon black, 7 ~ 9% sodium carbonate, 2 ~ 3% fulvic acid, 0.6 ~ 0.7.7% ethylene diamine, 2 ~ 3% absolute ethyl alcohol and the balance of deionized water.

4. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the microwave in the microwave treatment in the operation a of the step (2) has a power of 500 ~ 700W.

5. The method for preparing a cast iron workpiece for a clothes support according to claim 1, wherein the dosage of the electron beam irradiation treatment in the operation b of the step (2) is 2.1 ~ 2.5 x 10⁵rad/s。

6. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the frequency of the ultrasonic wave in the operation a of the step (3) is 50 ~ 60 kHz.

7. The method for preparing a cast iron workpiece for a clothes support according to claim 1, wherein the dosage of the electron beam irradiation treatment in the operation b of the step (3) is 2.4 ~ 2.5 x 10⁴rad/s。

8. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the stirring speed in operation a of step (4) is 100 ~ 140 rpm.

9. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the adding speed of the modified filler in the operation a of the step (4) is 1 ~ 2mg/s, and the adding amount of the modified filler is 2.3 ~ 3.3.3% of the adding amount of the pig iron in the operation a of the step (4).

10. The method for preparing a cast iron workpiece for a clothes hanger according to claim 1, wherein the modified filler is added at a rate of 1 ~ 2mg/s in operation a of step (4), and the temperature in the furnace is controlled to be 1500 ~ 1540 ℃ when the modified filler is melted in operation b of step (4).

Technical Field

The invention belongs to the technical field of cast iron castings, and particularly relates to a preparation method of a cast iron workpiece for a clothes support.

Background

The clothes support is a necessary living article for people to live, and although the plastic clothes support has a stainless performance, the clothes support is very easy to oxidize and pulverize and even break due to long-term exposure to the sun, so that the service life is very short. Nowadays, more and more people start to use metal clothes supports, iron clothes supports are widely used, however, the iron clothes supports are easy to rust during use, and are easy to break or bend during use, especially when being used for large clothes, and the research reports on the improvement of iron are few and the improvement effect is not significant, for example, application No. 201110051317.4 discloses a method for modifying the surface of a metal die casting by using a polymer coating method, which comprises the following steps: providing a metal die casting base material surface; coating a high molecular polymer on the surface of the metal die casting base material; depositing a metal film on the high molecular polymer in a vacuum coating mode; and a transparent protective layer is coated on the metal film to finish the surface modification of the metal die casting, so that the texture and the metal color of the surface of the metal die casting are improved, although the surface performance of the metal die casting is improved, the film is likely to crack and fall off in the use process, in addition, the surface performance of the casting is only improved in the mode, and the modification effect is greatly weakened or even disappears when the metal die casting is further processed.

Disclosure of Invention

The invention aims to provide a preparation method of a cast iron workpiece for a clothes support, aiming at the existing problems.

The invention is realized by the following technical scheme:

a preparation method of a cast iron workpiece for a clothes hanger comprises the following steps:

(1) preparing the modified filler:

a. putting the hollow glass beads into DBD cold plasma treatment equipment, carrying out cold plasma treatment, treating for 35 ~ 45min, and taking out for later use;

b. immersing the hollow glass beads subjected to cold plasma treatment in the operation a into a modifier, continuously stirring while immersing, stirring at the rotating speed of 120 ~ 140rpm for 30 ~ 40min, and filtering and drying;

(2) pre-treating pig iron:

a. putting pig iron into a microwave environment for microwave treatment for 5 ~ 9min, polishing the surface with abrasive paper, and removing debris for later use;

b. placing the pig iron treated in the operation a on a GJ-1.5 type high-frequency high-voltage high-power electron accelerator for electron beam irradiation treatment, and taking out for later use after the irradiation treatment is carried out for 24 ~ 28 min;

(3) pretreatment of scrap steel:

a. immersing the scrap steel into an oil stain cleaning agent, then placing the scrap steel into an ultrasonic environment for ultrasonic cleaning, taking out the scrap steel after cleaning for 1 ~ 2 hours, washing the scrap steel with sterile water, and drying the scrap steel for later use;

b. placing the steel scrap cleaned and dried in the operation a on a GJ-1.5 type high-frequency high-voltage high-power electron accelerator for electron beam irradiation treatment, and taking out for later use after the irradiation treatment is carried out for 16 ~ 18 min;

(4) and (3) preparing a finished product:

a. uniformly mixing the pig iron pretreated in the step (2) and the scrap steel pretreated in the step (3) according to the weight ratio of 10 ~ 14:1 ~ 2, putting the mixture into a stirring tank, adding the modified filler obtained in the step (1) at a constant speed while stirring, and taking out the mixture for later use after stirring for 1 ~ 2 h;

b. and c, adding the mixture obtained in the operation a into a smelting furnace for smelting, carrying out vacuum degassing treatment after the mixture is completely smelted, and then discharging from the furnace for casting and forming.

Further, the power of cold plasma treatment in operation a of step (1) is 1800 ~ 2000W.

Further, in the operation b of the step (1), the modifier comprises 3 ~ 4% of white carbon black, 7 ~ 9% of sodium carbonate, 2 ~ 3% of fulvic acid, 0.6 ~ 0.7.7% of ethylenediamine, 2 ~ 3% of absolute ethyl alcohol and the balance of deionized water according to the corresponding weight percentage.

Further, the power of the microwave during the microwave treatment in the operation a of the step (2) is 500 ~ 700W.

Further, the dosage of the electron beam irradiation treatment in the operation b of the step (2) is 2.1 ~ 2.5 × 10⁵rad/s。

Further, the frequency of the ultrasonic wave in operation a of step (3) is 50 ~ 60 kHz.

Further, the dosage of the electron beam irradiation treatment in the operation b of the step (3) is 2.4 ~ 2.5 × 10⁴rad/s。

Further, the rotation speed during stirring in the operation a of the step (4) is 100 ~ 140 rpm.

Further, the adding speed of the modified filler in the operation a of the step (4) is 1 ~ 2mg/s, and the adding amount of the modified filler is 2.3 ~ 3.3.3% of the adding amount of the pig iron in the operation a of the step (4).

Further, the adding speed of the modified filler in the operation a of the step (4) is 1 ~ 2mg/s, and the adding amount of the modified filler is that the temperature in the melting furnace when the modified filler is melted in the operation b of the step (4) is controlled to be 1500 ~ 1540 ℃.

The invention mainly aims at the use characteristics of the cast iron workpiece for the clothes support and the problems of the prior iron clothes support, researches and develops the preparation method of the cast iron workpiece for the clothes support. In the preparation of a cast iron workpiece, a specially-made modified filler is added, hollow glass beads are used as a matrix, DBD cold plasma treatment is firstly carried out, silicon hydroxyl with low surface activity of the hollow glass beads is promoted to become an active center, further, a monomer is initiated to polymerize on the surfaces of the beads, then, the monomer is added into a modifier, under the auxiliary action of active ingredients of the modifier, white carbon black in the modifier is effectively combined to the hollow glass beads, the performance of the hollow glass beads is enhanced and improved, the performance of a pig iron casting is further improved, meanwhile, the adhesiveness of the hollow glass beads in the matrix of the cast iron workpiece is enhanced, and the antirust performance of the pig iron casting can be enhanced; the method comprises the steps of pretreating pig iron and scrap steel before preparing a finished product, activating and falling off scraps on the surface of the pig iron in a microwave environment, polishing and washing to remove surface scraps, forming micro-etching on the surface of the pig iron through the irradiation of an electron beam, cleaning the scrap steel by using an oil stain cleaning agent, removing stains on the surface of the scrap steel under the auxiliary action of ultrasonic waves, and forming the micro-etching on the surface of the scrap steel through the irradiation of the electron beam. Then the pretreated pig iron and the waste steel are mixed evenly and put into a stirring tank, modified fillers are added slowly while stirring to change the constant speed, the modified fillers are promoted to be evenly distributed on the surfaces of the pig iron and the waste steel, then melting, vacuum degassing and tapping and casting molding are carried out, thus obtaining the product

Compared with the prior art, the invention has the following advantages:

the invention provides a preparation method of a cast iron workpiece for a clothes support, which improves the tensile property, impact toughness and rust resistance of a cast iron casting, further improves and enhances the service performance of the iron clothes support, improves the quality of the clothes support and prolongs the service life of the clothes support.

Detailed Description